When switching from one synthetic to another, such as the oil study going on, is it ok to just switch and go a full 12k miles? I've been running M1 0w-40 with AutoRx (third treatment) and have switched to Amsoil 10w-30 and want to go a full 12k miles on that oil. Should I change this sample before this, to flush out the old Mobil 1 or just go through with it and expect a little moly in the results? I was getting nailed in gas mileage with the 0w-40.
[ April 20, 2003, 07:04 PM: Message edited by: buster ]
[ April 20, 2003, 07:04 PM: Message edited by: buster ]